RESUMEN
The objective of the study is to analyze the dermatoglyphic profile and its relationship with the predominant physical qualities in university athletes in track and field modalities. A non-experimental design of transverse and exploratory type is presented in a sample of 87 (81%) student-athletes who are part of the representative team of athletics of a public university in Mexico, with an average age of 20.05 ± 2.2 years, 44 (50.6%) men and 43 (49.4%) women. For the measurement and analysis of innate physical potentialities, the technique of fingerprint dermatoglyphics was used. The results show that the most relevant digital formulas are, L>W and W>L with a D10 index (13.3). 83% of the athletes are in the right discipline according to the type of fingerprint, number of designs and lines. The study, provides a reference for future studies or for the detection and selection of talent for athletics. (AU)
El término dermatoglifo se debe a Cummins (glyphe: escritura, grabado; derma: piel) y se refiere a las líneas dermopapilares que se dibujan en los pulpejos de los dedos, las palmas de las manos y las plantas de los pies (Midlo y Cummins, 1942). Y aunque la dermatoglifia, en general, estudia las impresiones o reproducciones de los dibujos formados por las crestas en los pulpejos dactilares de las manos (complejo palmar), dedos (tercera falange) y plantas de los pies (de Abreu-Cruz et al., 2007), en la dermatoglifia enfocada en el estudio de potencialidades físicas en deportistas, se usa exclusivamente el análisis de las huellas de los dedos de las manos, por lo que la nomenclatura más acertada para hablar de esta metodología sería dermatoglifia dactilar deportiva (Gastélum y Guedea, 2017). Las huellas dactilares se forman entre el tercer y sexto mes de vida intrauterina, a la par con el desarrollo del sistema nervioso central (Chakraborty, 1991). (AU)
Asunto(s)
Humanos , Masculino , Femenino , Adulto Joven , Adulto , Dermatoglifia , Atletas , Atletismo , Estudios Transversales , México , Aptitud FísicaRESUMEN
El objetivo de este estudio fue determinar la validez y fiabilidad del instrumento de calidad percibida y satisfacción del servicio deportivo (EPOD2) en el contexto mexicano, así como invarianza de medición en función del sexo y de institutos del deporte. Participaron 1510 usuarios de servicios deportivos (Medad = 20.40, DT = 7.47). El valor de la medida de adecuación muestral del Análisis Factorial Exploratorio (AFE) fue óptimo, la prueba de Bartlett resultó estadísticamente significativa, por lo que el AFE es pertinente. El Análisis Factorial Confirmatorio (AFC) corroboró la estructura factorial de las escalas, el ajuste de los índices fue adecuado. La invarianza factorial indicó que la estructura es estable tanto para sexo como por instituto del deporte. Se concluye que el instrumento EPOD2 es válido y fiable para el estudio de la calidad percibida y satisfacción de servicios deportivos en población mexicana, además de ser un instrumento de fácil aplicación e interpretación. (AU)
The aim of this study was to determine the validity and reliability of the perceived quality and satisfaction of sports service instrument (EPOD2) in the Mexican context, as well as the measurement invariance regarding sex and sports institutes. Participants 1510 users of sports services (Mage = 20.40, SD = 7.47). The value of the measure for sample adequacy of the Exploratory Factor Analysis (EFA) was optimal, the Bartlett test result was statistically significant, which means the EFA is pertinent. The Confirmatory Factor Analysis (CFA) corroborated the scale's factorial structure, the adjustment of the indexes was adequate. The factorial invariance indicated that the structure is stable for sex as for sports institute. It is concluded that the EPOD2 instrument is valid and reliable for the study of the perceived quality and satisfaction of sports services within the Mexican population, besides being an instrument easy to interpret and to apply. (AU)
O objetivo deste studo foi determinar a validade e a confiabilidade do instrumento para percepção da qualidade e satisfação do serviço esportivo (EPOD2) no contexto mexicano, bem como a invariância de medição com base em institutos de sexo e esportes. Participaram 1.510 usuários de serviços esportivos (Medad = 20.40, DT = 7.47). O valor da medida de adequação da amostra da Análise Fatorial Exploratória (AFE) foi ótimo, o teste de Bartlett foi estatisticamente significativo, portanto, a AFE é relevante. A Análise Fatorial Confirmatória (AFC) corroborou a estrutura fatorial das escalas, o ajuste dos índices foi adequado. A invariância fatorial indicou que a estrutura é estável tanto para sexo quanto para institutos esportivos. Conclui-se que o instrumento EPOD2 é válido e confiável para o estudo da qualidade percebida e satisfação dos serviços esportivos na população mexicana, além de ser um instrumento de fácil aplicação e interpretação. (AU)
Asunto(s)
Adolescente , Adulto Joven , Adulto , Deportes , Satisfacción Personal , Actividad Motora , Estudios Transversales , Estudios de Cohortes , MéxicoRESUMEN
Resistance training techniques, that increase the global power output of an exercise, exercise set and continuous sets, can optimize neuromuscular adaptation and dynamic athletic performance. An observation that is apparent during traditional resistance training is the slowing of movement velocity as fatigue increases. To perform at maximum velocity, only repetitions that permit maintenance of the maximum power output are essential for increasing the global power output. This article reviews the available research which examines the pattern of velocity decrease with different load intensities. In addition, an analysis is performed of the possible advantages of resistance training based on the maintenance of the mechanical power versus traditional resistance training. Furthermore, a variety of fact-finding lines are proposed with the objective of answering the numerous open questions related to resistance training based on the maintenance of mechanical power.